Precursors

In chemistry, a precursor is a compound that participates in a chemical reaction that produces another compound.

40 wt. % in dilute HCl

50 wt. % solution in dilute HCl

Rhodium lodide is a Rh carbonylation catalyst precursor

Rhodium(II) acetate dimer is a Rh Catalyst precursor and is used for C-H activation reactions